CD4 News and Research

RSS

Nasal memory cells help slow influenza virus at entry

Memory cells in the nose slow the influenza virus as soon as it enters the body. They reduce viral levels and may help protect against more severe illness.

23 Apr 2026

Low-dose nivolumab injections shrink precancerous oral lesions

Direct injection of a low dose of the immune checkpoint inhibitor nivolumab into precancerous oral lesions significantly reduced lesion size and risk of cancer progression, sparing most patients from surgery.

21 Apr 2026

Injectable immunotherapy shrinks precancerous oral lesions in clinical trial

Injecting nivolumab (Opdivo) directly into precancerous oral lesions led to reduction in lesion size and allowed some patients to avoid surgery, according to research from a phase I clinical trial presented at the American Association for Cancer Research (AACR) Annual Meeting 2026, held April 17-22.

21 Apr 2026

Study creates genetic roadmap of how HIV virus interacts with human cells

The human immunodeficiency virus (HIV), which is the cause of AIDS, is a master of deception, using just nine genes to hijack the complex cellular machinery of the human body.

20 Apr 2026

Antiretroviral therapy reduces biological aging in people living with HIV

A major study presented today at ESCMID Global 2026 has found that antiretroviral therapy (ART) reduces accelerated biological ageing in people with HIV (PWH) by nearly four years, a finding that could transform how clinicians monitor HIV treatment and long-term health outcomes.

20 Apr 2026

Hidden viral reservoirs in tonsils may explain school-year respiratory outbreaks

A study conducted at the University of São Paulo (USP) in Brazil reveals that tissues such as the tonsils and adenoids can serve as hiding places for the rhinovirus, which causes the common cold and is responsible for most respiratory infections worldwide.

17 Apr 2026

How the immune system may influence Alzheimer’s, Parkinson’s, and related diseases

This review argues that neurodegeneration is shaped not only by toxic protein buildup but also by immune signaling, with microglia and T cells able to either protect the brain or worsen damage depending on context. It also highlights aging, head injury, and viral infection as major forces that reshape CNS immunity and may influence disease progression and future treatment strategies.

16 Apr 2026

Researchers identify molecular link between autoimmune disease and lymphoma risk

Patients with autoimmune diseases such as lupus and rheumatoid arthritis have an increased risk of developing lymphoma, a form of blood cancer that affects the lymphatic system.

13 Apr 2026

Deep UV microscopy enables label-free T cell characterization

A team of researchers at the Georgia Institute of Technology and Emory University has developed a deep-ultraviolet (UV) microscopy method that can rapidly assess T cell viability, activation state, and subtype-all without the need for fluorescent labels or cell destruction.

3 Apr 2026

Gut-derived metabolites regulate immune cells in complex ways

Published on March 23, 2026, in Volume 2, article number 18 of the journal Immunity & Inflammation, the review begins by systematically outlining the sources and synthetic pathways of immune-relevant microbial metabolites, including bile acids, short-chain fatty acids, amino acid derivatives, vitamins, trimethylamine/trimethylamine N-oxide, and odd-chain fatty acids.

31 Mar 2026

Study reveals immune changes in HIV and HCV coinfected patients

Human immunodeficiency virus (HIV)/hepatitis C virus (HCV) coinfection leads to severe systemic inflammation, increasing non-AIDS morbidity and mortality risk. CD39 ectoenzyme on T-cells, which catalyzes the conversion of pro-inflammatory purines to immunosuppressive adenosine, plays an important role in inflammation control.

28 Mar 2026

Gut immune responses found to trigger brain inflammation in MS

Multiple sclerosis (MS) is a debilitating neurological disorder caused by malfunctioning immune responses that target the brain and spinal cord of the central nervous system (CNS).

27 Mar 2026

Breakthrough research reshapes understanding of T cell immune responses

In a paradigm breaking study, Dr. Pavan Reddy, director of the Dan L Duncan Comprehensive Cancer Center at Baylor College of Medicine (BCM) and his team, in collaboration with Drs. Arul Chinnaiyan, S P Hicks Endowed Professor of Pathology, and Marcin Cieslik, assistant professor of pathology, both from University of Michigan Rogel Cancer Center, discovered a novel way the immune system, specifically T-cells, attack their target cells, reshaping long-held assumptions in immunology and demonstrating direct implications for the field of cancer immunology and bone marrow transplantation.

24 Mar 2026

Researchers explore "block and lock" strategy for functional HIV cure

For millions of people living with HIV, a daily regimen of medications is a lifelong necessity. If they stop taking the drugs-commonly referred to as antiretroviral therapy-the virus usually rushes back within weeks.

23 Mar 2026

New method uses biomarkers to determine a person's biological age

Aging is a highly individual process. An international consortium coordinated by researchers in Konstanz has developed a method that uses biomarkers to determine a person's biological age - a valuable tool for research on ageing and the development of new approaches in preventive medicine.

19 Mar 2026

New insights highlight multifaceted roles of CD4+ T cells in tumor immunity

For decades, cancer immunotherapy has focused primarily on CD8+ cytotoxic T lymphocytes as the main executors of tumor cell killing.

13 Mar 2026

Topical cream activates immune response to suppress skin cancer growth

A topical cream activated the skin's immune defenses and suppressed tumor growth in two preclinical models of cutaneous squamous cell carcinoma (cSCC), one of the most common cancers in the world, according to a study published today in the Journal of Clinical Investigation.

12 Mar 2026

DNA origami vaccine platform shows promise against multiple infectious viruses

The COVID-19 pandemic brought messenger RNA (mRNA) vaccines to the forefront of global health care. After their clinical trial stages, the first COVID-19 mRNA vaccine was administered on 8 December 2020 and mathematical models suggest that mRNA vaccines prevented at least 14.4 million deaths from COVID-19 in the first year alone.

11 Mar 2026

Researchers propose that Parkinson’s disease may start in the gut, not the brain

A perspective in The Journal of Clinical Investigation argues that environmental exposures may interact with the gut microbiome and intestinal barrier to trigger biological processes linked to Parkinson’s disease. The authors propose that cumulative environmental stressors can erode host resilience, promoting α-synuclein pathology, immune activation, and neurodegeneration.

5 Mar 2026

Researchers identify immune markers linked to cognitive decline after viral infections

What impact does a viral infection have on our memory, attention, and concentration? The COVID-19 pandemic has reignited interest in this question, which has now been extended to other infections such as HIV, herpes, and hepatitis.

5 Mar 2026